diff --git a/core/core-frontend/src/utils/utils.ts b/core/core-frontend/src/utils/utils.ts
index 40b492223e..6bc3821594 100644
--- a/core/core-frontend/src/utils/utils.ts
+++ b/core/core-frontend/src/utils/utils.ts
@@ -77,7 +77,10 @@ export const setColorName = (obj, keyword: string, key?: string, colorKey?: stri
       keyword +
       '</span>' +
       name.substring(index + keyword.length, name.length)
-    obj[colorKey] = textCode
+    obj[colorKey] = DOMPurify.sanitize(textCode, {
+      ALLOWED_TAGS: ['span'],
+      ALLOWED_ATTR: ['class']
+    })
     return
   }
   obj[colorKey] = null